-er -ey -up eee een eep eer eet eey en- ene enn enp enr ent enu eny ep- epe epn epp epr ept epu ere ern erp err ert eru ery ete etn etp etr ett etu ety eu- eue eun eup eur eut eye eyn eyp eyr eyt ne- nee nen nep ner net neu ney nne nnn nnp nnt nnu npe npn npp npr npt npu nre nrn nrp nrr nrt nru nry nte ntn ntp ntr ntt ntu nue nun nup nur nut nuu nuy nye nyn nyp nyt nyu nyy p-p pee pen pep per pet peu pey pn- pne pnn pnp pnr pnt pnu pny ppe ppn ppp ppr ppt ppu pre prn prp prr prt pru pry pt- pte ptn ptp ptr ptt ptu pty pue pun pup pur put puu puy py- pye pyn pyr pyt pyu re- ree ren rep rer ret reu rey rnn rnp rnr rnt rnu rny rpe rpn rpp rpr rpt rpu rrn rrp rrr rrt rru rte rtn rtp rtr rtt rtu rty rue run rup rur rut ruu ruy ry- rye ryn ryr ryu ryy te- tee ten tep ter tet teu tey tne tnn tnp tnr tnt tpe tpn tpp tpr tpt tpu tre trn trp trr trt tru try tte ttn ttp ttr ttt ttu tty tue tun tup tur tut tuu tuy tye tyn typ tyr tyt uee uen uep uer uet uey un- une unn unp unr unt unu uny up- upe upn upp upr upt upu ur- ure urn urp urr urt uru ury ute utn utp utr utt utu uty uue uun uur uut uuu uyu yee yen yep yer yet yey yne ynn ynp ynu yny ypu yre yrn yrp yrt yru yte ytn ytp ytr ytt ytu yue yun yup yur yut yuu yuy yye yyt yyu yyy